Refactor: Weights are stored by Table, not Component.
Component weights only make sense and are consumed by Table, so makes sense
to store info there. Now components instead store whether they are fixed-width
or fixed-height, but are ignorant of proportionality stuff.
Fix sparkline example, revert to old tscDemo
Clean up some detritus involving fixedWidth, fixedHeight
Remove useless comments from a test
Set axis fixity properly
Grunt Test now compiles before testing
Merge branch 'dev' into no-weight
Respond to Justin's concerns
Merge pull request #136 from palantir/no-weight

Have weights stored by Table, not Component